1/* sort -k2,2n */
2RTPROT_UNSPEC	0
3RTPROT_REDIRECT	1
4RTPROT_KERNEL	2
5RTPROT_BOOT	3
6RTPROT_STATIC	4
7RTPROT_GATED	8
8RTPROT_RA	9
9RTPROT_MRT	10
10RTPROT_ZEBRA	11
11RTPROT_BIRD	12
12RTPROT_DNROUTED	13
13RTPROT_XORP	14
14RTPROT_NTK	15
15RTPROT_DHCP	16
16RTPROT_MROUTED	17
17RTPROT_BABEL	42
18RTPROT_BGP	186
19RTPROT_ISIS	187
20RTPROT_OSPF	188
21RTPROT_RIP	189
22RTPROT_EIGRP	192
23